This script is Copyright (C) 2015-2017 Tenable Network Security, Inc.
The remote FreeBSD host is missing a security-related update.
StrongSwan Project reports
A denial-of-service and potential remote code execution vulnerability
triggered by crafted IKE messages was discovered in strongSwan.
Versions 5.2.2 and 5.3.0 are affected.
See also :
Update the affected package.
Risk factor :
High / CVSS Base Score : 7.5